We report a theoretical and experimental investigation of the propagation nonlinear waves passing over submerged rectangular step. A multimodal method allows calculating first- second-order reflected transmitted waves. In particular, at second order, free bound is theoretically presented. detailed analysis convergence problem shows that finite truncation series evanescent necessary to obtain sm...

The lattice Boltzmann method has become a promising numerical technique and is now being considered as an alternative to the conventional CFD methods owing possibility simulate more complex geometries at relatively low computational costs. simulations of very fine resolution domains in challenging due lack memory resources long processing times, therefore parallel computing way cope with this e...

The objective of this research is to construct parallel implementations of the Jacobi algorithm used for the solution of linear algebraic systems, to measure their speedup with respect to the serial case and to compare each other, regarding their efficiency. The programming paradigm used in this implementation is the message passing model, while, the MPI implementation used is the MPICH impleme...

The overlap of computation and communication has long been considered to be a significant performance benefit for applications. Similarly, the ability of the Message Passing Interface (MPI) to make independent progress (that is, to make progress on outstanding communication operations while not in the MPI library) is also believed to yield performance benefits. Using an intelligent network inte...

One important class of applications for high performance computers is based on 3{ dimensional block{structured grids. Multigrid and CFD codes using nite diierence or-nite volume discretizations fall into this class of applications. As the communication parts of these application programs are similar, the central Communications Library CLIC{3D has been developed. Because the CLIC Library is base...

The problem of deciding what is implied by a written text. of “reading between the lines” is the problem of text Inference. To extract proper inferences from a text requires a great deal of generol knowledge on the port of the reader. Past approaches have often used a “strong method” tuned to process a particular kind of knowledge structure (such OS a script, or a plan). The alternative is a “w...